import pygame as g
from pygame.sprite import Sprite



class Ship(Sprite):
    def __init__(self,ai_settings,screen):
        super(Ship,self).__init__()
        self.screen = screen
        self.ai_settings = ai_settings


        self.image=g.image.load('images/ship.bmp')
        self.rect = self.image.get_rect()
        self.screen_rect=screen.get_rect()

        self.rect.centerx = self.screen_rect.centerx
        self.rect.bottom = self.screen_rect.bottom

        self.center = float(self.rect.centerx)

        self.moving_right = False
        self.moving_left = False

    def update(self):
        if self.moving_right and self.rect.right < self.screen_rect.right:
            self.center+= self.ai_settings.ship_speed_factor
        if self.moving_left and self.rect.left > 0:
            self.center-= self.ai_settings.ship_speed_factor
        self.rect.centerx = self.center


    def blitme(self):
        self.screen.blit(self.image,self.rect)

    def center_ship(self):
        self.center = self.screen_rect.centerx



